iPad Music Syncing Problem--need fix today

I didnt want to start a thread but I didn't find any answer. Ever since I installed beta 7, and then subsequent betas, mu ipad will NOT sync music or videos. I have tried a lot of fixes (restore, wipe, deleting files) and I can't figure out what's wrong.

What is the fix for this? It is obviously a software issue but I can't seem to find the problem. WHen it says "finding which tracks to sync" it just quickly skips over it and going to the next thing. I need tp fix this today so hopefully can tell me the fix

Someone suggested clearing sync history but I couldnt find that option in itunes 10.

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